<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
        function back() {
            window.history.back();
        }
    </script>

</head>
<body>
<h1>
    你说的话古体诗
</h1>
<input type="button" value="后退"onclick="back()">
</body>
</html>